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Rayleigh scattering •
Rayleigh–Jeans law •
Rayleigh waves •
Rayleigh (unit), a unit of photon flux named after the 4th Baron Rayleigh •
Rayl, rayl or Rayleigh, two units of specific acoustic impedance and characteristic acoustic impedance, named after the 3rd Baron Rayleigh • Rayleigh criterion in
angular resolution •
Rayleigh distribution •
Rayleigh fading •
Rayleigh law on low-field magnetization •
Rayleigh length •
Rayleigh number, a dimensionless number for a fluid associated with buoyancy driven flow •
Rayleigh quotient •
Rayleigh–Ritz method •
Plateau–Rayleigh instability explains why a falling stream of fluid breaks up into smaller packets •
Rayleigh–Taylor instability an instability of an interface between two fluids ==Title of nobility==